Hangover III premier in Los Angeles (23 images)

Zach Galifianakis, a cast member in the motion picture comedy "The Hangover Part III", attends the premiere of the film at Westwood Village Theatre in the Westwood section of Los Angeles on May 20, 2013. UPI/Jim Ruymen

Heather Graham arrives for the premiere of "The Hangover: Part III" at the Westwood Village Theater in the Westwood section of Los Angeles on May 20, 2013. UPI/Jim Ruymen

Ed Helms arrives for the premiere of "The Hangover: Part III" at the Westwood Village Theater in the Westwood section of Los Angeles on May 20, 2013. UPI/Jim Ruymen

Bradley Cooper arrives for the premiere of "The Hangover: Part III" at the Westwood Village Theater in the Westwood section of Los Angeles on May 20, 2013. UPI/Jim Ruymen